Browser-based tools for software-defined radio.
A growing suite of free, open-source utilities for SDR and trunk-recorder. No installs, no accounts — everything runs locally in your browser.
Tools
Pick a utility to get started. More are on the way.
Trunk Recorder Config Generator Live
Build a complete, validated config.json for trunk-recorder — sources, systems, talkgroups, channels, and plugins — with companion CSV files.
Open toolTalkgroup & Channel Manager Soon
Import, clean up, merge, and export RadioReference talkgroup and channel lists across multiple systems.
Center Frequency Calculator Live
Paste a list of frequencies and get optimal SDR center frequencies, sample rate, and how many dongles you'll need for full coverage.
Open toolSDR Error Calculator Live
Work out the frequency-error correction (in Hz) for your SDR by comparing where you tuned versus where the signal actually appeared.
Open toolPrivate by design
All processing happens in your browser. Your files and keys never leave your machine.
No install
Nothing to download or configure. Open a tab, build your config, export the files.
Free & open-source
MIT-licensed and community-driven. Inspect it, fork it, contribute.
Always current
Built straight from the official trunk-recorder documentation and kept in sync.